Atty. Keith S. Van Duyne

Atty. Keith S. Van Duyne

Mr. Keith S.

Chicago Chicago 25 yrs experience 25 year
Call (312) 796-6938 Book Appointment

Profile Summary

About Keith S. Van Duyne at a glance

Keith S. Van Duyne is an Attorney based in Chicago, Illinois, practicing at Ladas & Parry LLP. They have 25+ years of legal experience, licensed to practice since 2001. Their practice focuses on patent, trademark, and trade secrets. Admitted to practice in Illinois (2001) and District of Columbia U.S. Patent and Trademark Office - Registered Patent Attorney District of Colum (2008). Educated at Arizona State University (B.S. Illinois, 1986) and Chicago Kent College of Law J.D. Certificate in Intellectual Property Law 2000 (—). Active member of ASSOCIATIONS & ORGANIZATIONS Illinois Bar Association Chicago Bar Association. Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Mr. Keith S. Van Duyne is a lawyer practicing patents - electrical engineering, designs, trademarks and 8 other areas of law
  • Keith received a B.S. degree from Arizona State University in 1986, and has been licensed for 25 years
  • Keith practices at Ladas & Parry LLP in Chicago, IL

Practice Areas Explained

Keith S. Van Duyne's Areas of Practice

Each practice area below reflects the types of cases Keith S. Van Duyne handles, with a brief overview of what that area of law covers.

Patent Law

Keith S. Van Duyne is one of 20,749 patent attorneys indexed nationally. Browse patent attorneys in Illinois →

Trademark Law

Keith S. Van Duyne is one of 23,222 trademark attorneys indexed nationally. Browse trademark attorneys in Illinois →

Trade Secrets

Keith S. Van Duyne is one of 6,644 trade secrets attorneys indexed nationally. Browse trade secrets attorneys in Illinois →

Jurisdictional Context

Why local counsel matters in Illinois

Practicing law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantive law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantive law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Keith S. Van Duyne

Where is Keith S. Van Duyne's law office located?
Keith S. Van Duyne's law practice is located in Chicago, Illinois. The firm is Ladas & Parry LLP. You can contact the office directly through this profile page.
What practice areas does Keith S. Van Duyne handle?
Keith S. Van Duyne focuses on patent, trademark, trade secrets. Each practice area listed reflects experience handling cases of that type in Illinois.
How long has Keith S. Van Duyne practiced law?
Keith S. Van Duyne has 25+ years of legal experience and has been licensed since 2001.
Where did Keith S. Van Duyne go to law school?
Keith S. Van Duyne earned their education at (B.S. Illinois, 1986); (—).
How can I contact Keith S. Van Duyne for a consultation?
You can contact Keith S. Van Duyne directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

B.S. Illinois
Arizona State University
- 1986
Chicago Kent College of Law J.D. Certificate in Intellectual Property Law 2000
- In Progress

Bar Admissions

Illinois
Admitted: 2001
District of Columbia U.S. Patent and Trademark Office - Registered Patent Attorney District of Colum
Admitted: 2008

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